Sketch of Mail from upin ipin if they're in apocalypse au.
The first person that survived would be him, and Upin n Ipin only survived bcs of power of friendship and plot armour. For Meimei, she'd be away from their hometown when the apocalypse happened bcs shes celebrating Chinese new year but she survived and end up in some cult with Rajoo. Ehsan miraculously survived but he changed after Fizi's death. Dzul is just around as side character but he's cute so its fine, so does Ijat, he'll die soon and Dzul almost kill himself for Ijat.
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The apocalypse happened bcs of the government worldwide decided to inject a something into the earth and affecting the animals and crops and also humans. From the air pollution created a deadly gas, if inhaled youll be dead. The animals have involved but some mutated.